fellas, the most recent generation Viper is going away...but, according to MotorTrend magazine, the Viper will simply be an all-new model sometime in 2013 or'14. No word on powertrain, but MT staff says they hope it'll be some version of a V-10.

There is rumored to be a Challenger SRT-10, but only as a concept at the moment. 2011+ Challenger SRT's are powered by a 6.4L Hemi 392ci making 475hp.